0G Wireless technology
Zero generation mobile technology (0G) refers to pre-cell phone mobile telephony technology, such as radiotelephone, which some had in cars before the arrival of cell phones.
The modern cellular mobile-telephone technology was produced by the mobile radiotelephonic system as 0G was the predecessor of the first generation of cellular telephones.
1G: Analog Cellular Networks
1G is the 1st generation of wireless cellular technology. Mobile telecommunications were introduced with 1G technology in the 1980s. 1G is analog technology and supports voice-only calls.
1G Analog Cellular Network Features
– 1G Characteristic: First wireless communication
– Bandwidth: Analog telecommunication (30KHz)
– Frequency: 150MHz / 900MHz
– Capacity (data rate): 2kbps
– Technology: Analog cellular
The cell phones using 1G technology had:
– Bad voice quality
– Poor battery life
– Big cellphones
2G: Digital Networks
2G is the 2nd-generation of wireless cellular technology. 2G cellular networks took place in Finland in 1991 on the GSM standard.
On March 27, 1991, the world's first GSM phone call was introduced by Radiolinja GSM operator from analog to digital communications.
The 2G wireless cellular network is a digital telecommunication technology that allows call and text encryption, along with data services such as SMS, MMS and picture messages.
2G Mobile Phones Features
– 2G Characteristic: Digital telecommunication
– Frequency: 1.8GHz (900MHz)
– Capacity (data rate): 64kbps
– Bandwidth: 900MHz (25MHz)
– Technology: Digital cellular, GSM
2.5G and 2.75G
2.5G network is a new packet-switching technology between the second and third generations. 2.5G is more efficient than 2G technology that led to 2.75G networks. 2.5G capability is usually associated with General Packet Radio Services (GPRS).
2.5G Features
– 2G cellular technology with GPRS
– E-Mails
– Camera phones
– Web browsing
Key Differences Between 1G and 2G
The key difference between 1G and 2G mobile cellular networks is that the radio signals used by 1G technology are analog, while 2G wireless technologies are digital that allow voice and data communication services such as text message services.